CN103711021B - The equipment of transferring heat, surface processing device and drying section in fiber web machine - Google Patents
The equipment of transferring heat, surface processing device and drying section in fiber web machine Download PDFInfo
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- CN103711021B CN103711021B CN201310444822.4A CN201310444822A CN103711021B CN 103711021 B CN103711021 B CN 103711021B CN 201310444822 A CN201310444822 A CN 201310444822A CN 103711021 B CN103711021 B CN 103711021B
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- equipment
- metal tape
- heat
- framework
- conducting medium
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Classifications
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F5/00—Dryer section of machines for making continuous webs of paper
- D21F5/004—Drying webs by contact with heated surfaces or materials
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F5/00—Dryer section of machines for making continuous webs of paper
- D21F5/02—Drying on cylinders
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F3/00—Press section of machines for making continuous webs of paper
- D21F3/02—Wet presses
- D21F3/0209—Wet presses with extended press nip
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F3/00—Press section of machines for making continuous webs of paper
- D21F3/02—Wet presses
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F3/00—Press section of machines for making continuous webs of paper
- D21F3/02—Wet presses
- D21F3/0209—Wet presses with extended press nip
- D21F3/0218—Shoe presses
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F3/00—Press section of machines for making continuous webs of paper
- D21F3/02—Wet presses
- D21F3/0281—Wet presses in combination with a dryer roll
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F5/00—Dryer section of machines for making continuous webs of paper
- D21F5/02—Drying on cylinders
- D21F5/021—Construction of the cylinders
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F5/00—Dryer section of machines for making continuous webs of paper
- D21F5/02—Drying on cylinders
- D21F5/022—Heating the cylinders
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F5/00—Dryer section of machines for making continuous webs of paper
- D21F5/02—Drying on cylinders
- D21F5/10—Removing condensate from the interior of the cylinders
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G1/00—Calenders; Smoothing apparatus
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G1/00—Calenders; Smoothing apparatus
- D21G1/006—Calenders; Smoothing apparatus with extended nips
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G1/00—Calenders; Smoothing apparatus
- D21G1/02—Rolls; Their bearings
- D21G1/0253—Heating or cooling the rolls; Regulating the temperature
- D21G1/0266—Heating or cooling the rolls; Regulating the temperature using a heat-transfer fluid
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G1/00—Calenders; Smoothing apparatus
- D21G1/0066—Calenders; Smoothing apparatus using a special calendering belt
Landscapes
- Paper (AREA)
- Preliminary Treatment Of Fibers (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
Theme of the present invention is a kind of equipment for transferring heat in fiber web machine, has: microscler framework (14), and this equipment can be supported on the desired locations in fiber web machine by this framework; Be set to can around the jointless metal tape (16) of this frame member, and this framework has the supporting member of convex, and (14 ") can load this metal tape from the outside relative to this supporting member.This metal tape by cylindrical shape around framework arrange metal tape form, and with this metal tape explicitly, two end faces of this metal tape has end-surface member (18), this end-surface member is by its periphery on the edge of metal tape, and framework extends through end-surface member in two end.This equipment also has feeding mechanism and discharger, for heat-conducting medium being transported to the medial surface of metal tape, and is derived from this equipment by heat-conducting medium.
Description
Technical field
Theme of the present invention relates to a kind of equipment for transferring heat in fiber web machine, and it has: microscler framework, and this equipment can be supported on the desired locations in fiber web machine by this framework; Be set to can around jointless (endlos, circulation) flexible metal band of this frame member, and this framework comprises the supporting member of convex, can load from the outside relative to this supporting member to this flexible metal band.
Theme of the present invention also relates to a kind of surface processing device for the treatment of fiber web, this surface processing device has the complementary elements (Gegenelement) being configured to the pressure zone rotated around director element and the outside being arranged on pressure zone ring and forming contact surface together with pressure zone, to be formed fiber web processing region between pressure zone and complementary elements, pending fiber web is guided through this region.
Theme of the present invention also relates to a kind of fiber web machine drying section, and moisture is separated by evaporation by it from fiber web.
Background technology
Therefore fiber web machine, particularly paper machine also also have multiple machine part processing stage of having multiple fiber web, wherein, heat is directly or through some support mesh or supporting strap or enter in fiber web via these support mesh or supporting strap.
Wherein it is well known that, in drying section, make heat enter in fiber web by means of drying cylinder, to evaporate the water be included in fiber web.Drying cylinder is normally made up of the cylindric sheath of cast iron and the fixing end-surface member on its end that comprises rotating shaft/axle.Drying cylinder is heated by steam usually, at this, based on the steam of its heating effect condensation in the inside at cylinder.Therefore, these cylinders have steam providing apparatus and condensate discharging device.Relatively thick cylinder jacket is meant to be sizable obstruction for heat trnasfer, and therefore the pressure of condensed steam is sufficiently high, to reach the desirable surface temperature of cylinder.In addition, in the drying cylinder be heated by steam, the impact of the layer of condensate that heat trnasfer is also formed in the cylinder and uniformity thereof.Particularly the thickness of layer of condensate participates in determining thermal conductivity and uniformity thereof to a great extent.
In addition, when carrying out surface treatment to fiber web in surface processing device, such as calendering device, in order to strengthen the characteristic of process and/or influencing fiber web material, it is known that make heat enter in fiber web.Therefore, by the known a kind of surface processing device of publication WO03064761, it has the pressure zone that is set to rotate around director element with the outside being arranged on pressure zone ring and form the complementary elements of contact surface together with pressure zone, thus between pressure zone and complementary elements, forming fiber web processing region, pending fiber web is conducted through this region.According to this publication, this pressure zone of independent heating devices heat can be utilized before described processing region.In addition, as what mention in this patent document, described complementary elements is such as made up of so-called hot-rolling.
A kind of hot-rolling according to prior art is described in US4955268.This roller has relatively large thermal resistance due to larger material thickness.In addition, for the flow channel of heat transfer medium in such configuration because the reason of manufacturing technology is usually located at the degree of depth that distance outer surface reaches about 60 millimeters, therefore, in order to the surface temperature of roller of realizing ideal, the heat transfer medium for warm-up mill needs quite high temperature.
In WO03064761, particularly figure 7 illustrates a kind of embodiment, wherein, complementary elements has band and the convex support in the inside of this band.
Summary of the invention
The object of the invention is to propose a kind of in fiber web machine to the equipment of its knitmesh, fiber web, band or (other) corresponding flexible surface transferring heat, compared to the design according to prior art, utilize this equipment to strengthen thermal conductivity.
A specific purpose of the present invention is to propose a kind of surface processing device, it has the pressure zone run around director element, and the complementary elements forming contact surface together with pressure zone is had in the arranged outside of pressure zone ring, for adding hot-pressing strip, compared to the technical scheme according to prior art, this device is utilized to improve heat transfer efficiency.
Another specific purpose of the present invention is to propose a kind of drying device for the fiber web in fiber web machine, compared to the technical scheme according to prior art, utilizes this drying device to improve heat transfer efficiency.
Above-mentioned purpose is achieved by a kind of equipment for transferring heat in fiber web machine, and this equipment has: microscler framework, and this equipment can be supported on the desired locations in fiber web machine by this framework; Be set to can around the jointless metal tape of this frame member, and this framework comprises the supporting member of convex, can relative to this supporting member load this metal tape/exert pressure from the outside.The invention is characterized in: metal tape is made up of the metal tape with being set to cylindrical shape around this framework, and on two end faces of this metal tape, there is the end-surface member be associated with this metal tape, this end-surface member passes through its periphery on the edge of metal tape, framework extends through this end-surface member in two end, and this equipment has heat-conducting medium feeding mechanism and heat-conducting medium discharger, for heat-conducting medium being sent to the medial surface of metal tape and heat-conducting medium being derived from this equipment.
According to one embodiment of the present invention, supporting member is along predetermined (geplanten, plan) rotation direction of metal tape has and imports edge and derive edge, and have substantially the same bearing-surface between importing edge with derivation edge, this bearing-surface and the center of rotation of predetermined metal tape form the angle corresponding with the coverage of the specified loading area (Nennbelastungsbereich) of equipment.
In the device, specified loading area refers to metal tape region, and this metal tape region, by the interior support of this equipment, makes metal tape to bear load.In addition, in this specified loading area, there is slidingly contacting in the bearing-surface of metal tape and supporting member.
According to another embodiment of the present invention, heat-conducting medium feeding mechanism has the distributor at least one space being arranged between framework and metal tape, and this distributor has multiple outlet.
According to another embodiment of the present invention, the outlet of distributor is configured to, and is ejected on the inner surface of metal tape by heat-conducting medium.
According to another embodiment of the present invention, the outlet of distributor is configured to, on inner surface heat-conducting medium being ejected into metal tape and this importing edge contiguous.
According to another embodiment of the present invention, heat-conducting medium discharger has scraper, for scraping off heat-conducting medium from band inner surface.
According to another embodiment of the present invention, scraper is arranged on the derivation adjacent edges of supporting member.
According to another embodiment of the present invention, scraper has the doctor blade holder stretched out from framework and the doctor edge be fixed on doctor blade holder, one or more drain sleeve (Abf ü hrstutzen) is provided with, for removing the heat-conducting medium that is collected and being imported in discharge tube near doctor edge.
According to another embodiment of the present invention, this end-surface member is rounded, so that framework extends through this end-surface member, thus at executing location (the Durchf ü hrungsstelle of end-surface member, enforcing location), the axis of framework and the center of end-surface member coincide.
According to another embodiment of the present invention, the supporting member of described equipment has at least one charger that can adjust along the longitudinal direction, such as load shoe.
Preferably, heat-conducting medium is made up of lubricant medium and heat-conducting medium.
Utilize according to equipment of the present invention, can realize than thermal resistance lower in the hot-rolling of prior art.Thus, when the temperature that the hot-rolling by prior art provides, identical thermal output or higher thermal output can be realized with lower heat-conducting medium temperature.
In addition, uniform Temperature Distribution can be realized by removing heat-conducting medium with scraper from the inner surface of metal tape, thus, the STRESS VARIATION/stress fluctuation of metal tape can also be reduced, thus extend its service life.
In addition, compared with the situation of the hot-rolling of prior art, utilize according to heat-conducting medium feeding mechanism of the present invention can realize as required high throughput (Durchsatz) and evenly distribution.
Object of the present invention is also realized by a kind of surface processing device for the treatment of fiber web, this surface processing device has the pressure zone that is set to rotate around director element with the outside being arranged on pressure zone ring and form the complementary elements of contact surface together with pressure zone, between pressure zone and complementary elements, form fiber web processing region, pending fiber web is conducted through this fiber web processing region.Feature according to surface processing device of the present invention is, complementary elements has the equipment for transferring heat in fiber web machine, and this equipment has: microscler framework, and this equipment can be supported in the desired locations in fiber web machine by this framework, with be set to can around the jointless metal tape of the flexibility of this frame member, and this framework comprises the supporting member of convex, can load metal tape from the outside relative to this supporting member, and, in the device, metal tape is set to cylindricly around this framework, and explicitly identical end-surface member is set on two end face with this metal tape, the periphery of this end-surface member is fixed on the edge of metal tape, and framework extends through this end-surface member in two end, this equipment also has heat-conducting medium feeding mechanism and heat-conducting medium discharger, for heat-conducting medium being supplied to the inner surface of metal tape and discharging heat-conducting medium from this equipment.
According to an embodiment of the present invention, charger is set at the processing region being arranged in pressure zone ring inside, such as counter roller (Gegenwalze).
According to an embodiment of the present invention, this counter roller is made up of the roller with driver.
According to an embodiment of the present invention, this counter roller is made up of rigid roller, and at this, the supporting member of described equipment has the charger that can adjust along the longitudinal direction, such as load shoe.
According to one embodiment of the present invention, counter roller has the charger that can adjust along the longitudinal direction, such as load shoe.
In one embodiment, the complementary elements of surface processing device has an equipment, in the device, supporting member has importing edge and derives edge in the rotation direction of predetermined metal tape, and between these two edges, there is substantially consistent bearing-surface, at angle, the specified loading area of this angle and this equipment is superimposed for the center of rotation shape of this bearing-surface and predetermined metal tape.
In one embodiment, the complementary elements of surface processing device has an equipment, and in the device, heat-conducting medium feeding mechanism has the distributor at least one space being arranged between framework and metal tape, and this distributor has multiple outlet.
According to another embodiment, the complementary elements of surface processing device has an equipment, and in the device, the outlet of distributor is configured to, and is ejected on the inner surface of metal tape by heat-conducting medium.
According to another embodiment, the complementary elements of surface processing device has an equipment, and in the device, the outlet of distributor is configured to, and is ejected into by heat-conducting medium on the inner surface of the metal tape at the importing adjacent edges place of supporting member.
According to another embodiment, the complementary elements of surface processing device has an equipment, and in the device, heat-conducting medium discharger has scraper, for striking off heat-conducting medium from the inner surface of band.
According to another embodiment, the complementary elements of surface processing device has an equipment, and in the device, scraper is arranged near the derivation edge of supporting member.
According to another embodiment, the complementary elements of surface processing device has an equipment, in the device, scraper has the doctor blade holder stretched out from framework and the doctor edge be fixed on doctor blade holder, one or more drain sleeve is set near this doctor edge, for drawing the heat-conducting medium that is collected and being imported in discharge tube.
According to another embodiment, the complementary elements of surface processing device has an equipment, in the device, end-surface member is circular, so that framework extends through this end-surface member, thus in the executing location of end-surface member, the axis of framework and the center of end-surface member coincide.
According to another embodiment, the complementary elements of surface processing device has an equipment, and in the device, the supporting member of this equipment has at least one charger that can adjust along the longitudinal direction, such as load shoe.
Object of the present invention is also by a kind of realizing for the drying section being separated moisture from fiber web by evaporation in fiber web machine of attaching troops to a unit.The feature of this drying section is, it has at least one equipment for heat conduction in fiber web machine, and this equipment has: microscler framework, and this equipment can be supported on the desired locations in fiber web machine by this framework; Be set to can around the jointless metal tape of this frame member, and this framework has the supporting member of convex, can load this metal tape from the outside relative to this supporting member; And in the device, metal tape cylindrically is set up around framework, and on two end face, be provided with identical end-surface member explicitly with this metal tape, this end-surface member is by the edge of its periphery to metal tape, framework extends through this end-surface member in two end, this equipment also has heat-conducting medium feeding mechanism and heat-conducting medium discharger, for heat-conducting medium being directed into the inner surface of metal tape and deriving heat-conducting medium from this equipment.
Framework has the supporting member of convex, and preferably, whole framework is hollow, and forms the body in cross-section in suitable shape limiting inner space.But gas or hydraulic seal such as can not be caused in this inner space of framework.
Further feature of the present invention is provided by accompanying drawing and claims.
Can be applied in numerous different paper mold according to technical scheme of the present invention, wherein most important part will be related to below.Boundary line between paper and paperboard is interpenetrative (flie β end, fuzzy), and these two kinds of products can be divided into two classes according to its mass area ratio: paper is individual layer and its mass area ratio is 25-300g/m
2, and cardboard be make with multilayer technique and its mass area ratio is 150-600g/m
2.Can see, the boundary line between paper and paperboard is interpenetrative, because the mass area ratio of the lightest cardboard is less than the mass area ratio of the heaviest paper.In the ordinary course of things, paper is used for printing, and cardboard is then for packing object.
The data of current conventional fibrous material web can be related in the following description, wherein may occur obvious difference.
That make with mechanical half-stuff (wood pulp), namely containing wood pulp printing paper is newspaper printing paper and uncoated and coating magazine print paper.
Newspaper printing paper (newsprint) or make with mechanical half-stuff completely, or also can needlebush paper pulp (0-15%) only containing a small amount of bleaching, and/or regenerated fiber can be used to replace mechanical half-stuff.Conventional data below goes for newspaper printing paper: mass area ratio is 40-48.8g/m
2, content of ashes is 0-20%, PPSS10 roughness is 3.0-4.5 μm, Bendtsen(Bendt Bendtsen) and roughness is 100-200ml/min, bulk density is 600-750kg/m
3, reflectance factor is 57-63%, and opacity is 90-96%.
Mechanical half-stuff, the needlebush paper pulp of the bleaching of 10-15% and the stuffing of 15-30% of uncoated magazine print paper (SC=supercalendering) usually containing 50-70%.The conventional data of the SC paper of press polish (comprising: SC-C, SC-B and SC-A/A+, and other) is: mass area ratio is 40-60g/m
2, content of ashes is 0-35%, Hunter(Hunter) and glossiness <20-50%, PPSS10 roughness is 1.0-2.5 μm, bulk density is 700-1250kg/m
3, reflectance factor is 62-70%, and opacity is 90-95%.
Coating magazine print paper (LWC=light coating) the mechanical half-stuff containing 40-60%, the needlebush paper pulp of the bleaching of 25-40% and the stuffing of 20-35% and coating slurry.Conventional data below goes for LWC paper: mass area ratio is 40-70g/m
2, Hunter glossiness is 50-65%, PPSS10 roughness is 0.8-1.5 μm (offset, hectograph) and 0.6-1.0 μm (roto, intaglio plate), and bulk density is 1100-1250kg/m
3, reflectance factor is 70-75%, and opacity is 89-94%.
Conventional data below can be applicable to MFC paper (mechanical finished coated paper): mass area ratio is 50-75g/m
2, Hunter glossiness is 25-70%, PPSS10 roughness is 2.2-2.8 μm, and bulk density is 900-950kg/m
3, reflectance factor is 70-75%, and opacity is 91-95%.
Conventional data below can be applicable to FCO paper (film coated offset paper): mass area ratio is 40-70g/m
2, Hunter glossiness is 45-55%, PPSS10 roughness is 1.5-2.0 μm, and bulk density is 1000-1050kg/m
3, reflectance factor is 70-75%, and opacity is 91-95%.
Conventional data below can be applicable to MWC paper (in quantitatively coated paper): mass area ratio is 70-90g/m
2, Hunter glossiness is 65-75%, PPSS10 roughness is 0.6-1.0 μm, and bulk density is 1150-1250kg/m
3, reflectance factor is 70-75%, and opacity is 89-94%.
The high quantitatively coated paper of HWC() mass area ratio be 100-135g/m
2, and even can carry out the coating more than twice.
The printing paper not containing wood pulp be made up of cellulose, namely meticulous paper (Feinpapiere), is uncoated, and is cellulose-based based on cellulosic coated printing paper, and wherein, the share of mechanical half-stuff is lower than 10%.
Contain based on cellulosic uncoated printing paper (WFU): the birch pulp of the bleaching of 55-80%, the needlebush paper pulp of the bleaching of 0-30% and the stuffing of 10-30%.The data differences of WFU is very large: mass area ratio is 50-90g/m
2(even up to 240g/m
2), Bendtsen roughness is 250-400ml/min, and reflectance factor is 86-92%, and opacity is 83-98%.
Coating weight based on cellulosic coated printing paper (WFC) varies widely with application target as requested.Be below arrange for by once coating and the frequently-used data based on cellulosic printing paper of twice coating: for being once coated with, its mass area ratio is 90g/m
2, Hunter glossiness is 65-80%, PPSS10 roughness is 0.75-2.2 μm, and reflectance factor is 80-88%, and opacity is 91-94%; For twice coating, its mass area ratio is 130g/m
2, Hunter glossiness is 70-80%, PPSS10 roughness is 0.65-0.95 μm, and reflectance factor is 83-90%, and opacity is 95-97%.
Follow the mass area ratio of release liners (releasepaper, peeling paper) at 25g/m
2with 150g/m
2between change.
Other meticulous paper also comprises wrapping paper (brown paper), toilet paper and wallpaper (Wallpaper, wallpaper).
Cellulose, mechanical half-stuff and regrown material is used in the production of cardboard.Such as according to its application target, cardboard can be divided into following several large class:
-corrugated board, it has ripple (corrugation) and coating (liner);
-paperboard cardboard (FBB, WLC, SBS), it can be made into such as folded box, carton and liquid container;
-cultural paper plate (GrafishceKarton), for card, map, folder guard shield ...;
-wallpaper cardboard (hanging raw stock).
Accompanying drawing explanation
With reference to the accompanying drawings equipment according to the present invention is described in detail.Wherein:
Fig. 1 shows the equipment for transferring heat according to an embodiment of the present invention;
Fig. 2 shows the cross section of equipment as shown in Figure 1 with side view;
Fig. 3 shows the principle of the drying section of fiber web machine according to an embodiment of the present invention;
Fig. 4 shows fiber web surface processing device according to an embodiment of the present invention;
Fig. 5 shows the fiber web surface processing device according to another embodiment of the present invention.
Detailed description of the invention
Below with reference to Fig. 1 and Fig. 2, the present invention will be described.Fig. 1 shows equipment 10 according to an embodiment of the present invention, for heat is passed to fiber web pending and/or to be produced in fiber web machine.Can be installed according to equipment of the present invention on multiple different position in fiber web machine, fiber web should be heated or cooled over these locations.Utilize this equipment even can form almost specified loading area 12 cylindrically, in this specified loading area, predetermined load can be loaded to this equipment, and be formed from this equipment to the heat trnasfer of the strengthening on the component be positioned at its surface (such as support mesh etc.) or fiber web.
This equipment has framework 14, and two end has support 14 ', and this equipment can be supported in the desired locations in fiber web machine by these two supports.On the framework of this equipment and between these two supports 14 ', be provided with supporting member 14 ", this supporting member is used as the loading surface of framework.And preferably, supporting member 14 " forms a part for the framework 14 be shaped in a desired manner.This framework also at least along the longitudinal direction of this equipment at supporting member 14 " region in preferably formed by having at least one hollow structure playing the convex surface of supporting member effect.Preferably, this framework is made of metal, such as, be made up of cast iron or steel.This equipment have can around framework 14, around its longitudinal axis 60 rotate jointless metal tape 16.Preferably, this metal tape is made up of the metal tape that 0.5-1mm is thick, and is set to cylindric.Can reduce the energy demand required by dried fibres web in this way, because in the present invention, when heat enters into fiber web, it is very little that the temperature via metal tape declines.Also the lower thermal resistance of the hot-rolling of ratio as prior art will be realized thus.Also can, by the temperature provided according to the hot-rolling of prior art, the heat-conducting medium with lower temperature be utilized to realize identical thermal power or corresponding higher thermal power now.
Supporting member 14 " is formed as convex, can loads relative to supporting member metal tape/press from the outside thus.Schematically illustrate in FIG as how with supporting member 14 " consistent the holding of specified loading area 12 guide fiber web W and support mesh F by this equipment.Like this, this equipment can also be used such as to replace steam cylinder, carry out dried fibres web.In FIG, this equipment is positioned at top position, and it equally also can be arranged on the lower position of drying section well certainly.Fig. 3 shows a part for the fiber web machine drying section with screen cloth guide, wherein, the steam cylinder of top replace by equipment according to the present invention.
Metal tape 16 is attached troops to a unit in discoid end-surface member 18, and end-surface member 18 is bonded on the edge of metal tape 16 airtightly by its periphery.The center of two end-surface member 18 has bearing 20.This bearing is bearing on the support 14 ' of framework 14, extends through end-surface member.This bearing can make end-surface member rotate, and therefore makes ferrule rotate around the axis of support.
The main member of this equipment comprises: heat-conducting medium feeding mechanism 22, for heat-conducting medium being guided to the inner surface of metal tape 16; With heat-conducting medium discharger 24, for discharging heat-conducting medium from this equipment.
Heat-conducting medium feeding mechanism 22 has the distributor 26 that the longitudinal direction along equipment stretches, its have multiple parallel, point to unidirectional outlet 28, heat-conducting medium is discharged from these outlets along identical direction substantially.Distributor 26 is arranged in the space between framework 14 and metal tape 16, thus heat-conducting medium can be directed on the medial surface of metal tape at run duration.The operation principle of this equipment is, the metal tape be supported on its bearing is rotated when not having the driver of oneself.Simultaneously heat-conducting medium is taken on the medial surface of metal tape, or in some embodiments, heat-conducting medium is taken to supporting member 14 " importing adjacent edges.Preferably, these outlets are arranged in the whole active length of distributor with uniform relative spacing, and this active length at least extends to the supporting member 14 of framework on the longitudinal direction of this equipment " region in, this region is called as specified loading area 12.In this way, accurately can adjust the throughput of heat-conducting medium, and very large value can be adjusted to.Also can realize very uniform Temperature Distribution, particularly along the Temperature Distribution on the longitudinal direction (namely longitudinal direction, the i.e. transverse machine of metal tape) of this equipment simultaneously.Between the outer surface that the heat-conducting medium supplied arrives support and the inner surface of metal tape, there, heat-conducting medium will go out edge from importing edge guides and advance in specified loading area 12, and make heat pass metal tape at this to be transferred into the component be positioned on metal tape, such as fiber web, support mesh or band.Heat-conducting medium plays the effect of the lubricant as the outer surface of supporting member and the inner surface of metal tape simultaneously.Therefore, preferably, heat-conducting medium also can be made up of the lubricant with applicable adjustable temperature.The lubrication and the heat-conducting medium that are applicable to this object are well oil.But, also can ad hoc select lubrication and heat-conducting medium for various uses.
Heat-conducting medium discharger 24 has scraper 30.The doctor edge 32 that this scraper comprises doctor blade holder that is outside from framework 14 that is that stretch the space limited by framework 14 and metal tape 16 and is fixed on doctor blade holder.This scraper 30 is configured to, and blade can be made to be loaded relative to the inner surface of metal tape 16/to press.One or more drain sleeve 34 is set near doctor edge, the heat-conducting medium utilizing scraper to collect from the inner surface of metal tape can leave scraper by this drain sleeve, and can be directed in the discharge-channel 36 be connected on this drain sleeve by a drain sleeve.Preferably, the longitudinal direction along scraper arranges multiple such drain sleeve 34, in order to guarantee that heat-conducting medium evenly, reliably leaves.Discharge-channel 36 extends this equipment from sleeve pipe in the inside of framework 14.If utilize scraper to remove heat-conducting medium according to the present invention, then can realize very uniform Temperature Distribution in metal tape, thus reduce thermal stress, and (metal tape) longer service life can be obtained.
Framework 14 also has the supporting member 14 of convex in embodiment as shown in Figure 1 ".At this, this frame shape becomes and has almost cylindric cross section, thus can simply between framework 14 and metal tape for providing position for the scraper 30 of heat-conducting medium and feeding mechanism 22.This position is mainly arranged in the cross-section parts of " being contracted " of the stray circle tubular of this framework.
Supporting member 14 in described equipment " have even, smooth surface, and preferably, its radius of curvature all equals the radius of curvature of metal tape in whole loading area.In addition importantly, this surface does not at least have the hole that possibility makes the heat-conducting medium between supporting member and metal tape freely leak.The surface that supporting member 14 " imports edge 36 so that the predetermined rotation direction shown in arrow D to have and derives edge 38, metal tape 16 and supporting member 14 " in Fig. 1 of metal tape 16 starts to run along identical direction or start each other to seek the direction along identical on described edge.This supporting member has at the bearing-surface 39 importing edge and derive between edge, and at angle, the specified loading area 12 of this angle and described equipment is superimposed for the center of rotation shape of this bearing-surface and predetermined metal tape 16.The angle that this specified loading area 12 has be in be greater than 180 degree scope in.
Heat-conducting medium discharger 24 is arranged on supporting member 14 " derivation edge 38 near, at this, the supporting role produced by supporting member of metal tape 16 is on the load(ing) point of scraper 30, thus the probability that scraper breaks down is reduced to minimum.
Heat-conducting medium feeding mechanism is also arranged on supporting member 14 " importing edge 36 near, thus can guarantee safely at metal tape 16 and supporting member 14 " between the supply of heat-conducting medium.
Show in phantom the second embodiment of distributor 26 ' in FIG, it is integrated in framework 14 now, and its outlet is opened in framework.In addition, this equipment has passage 54, can import gas, be preferably air by this passage to the inside of metal tape, thus forms the superpressure relative to external environment condition in metal tape inside, and the overpressure level desired by maintaining.The adjustable pressure source that passage 54 is positioned at outside equipment with (unshowned in the accompanying drawings) is connected.In order to support the discharge of heat-conducting medium and relatively easily be kept in control by metal tape stress, also need superpressure.Preferably, passage 54 is passed in the space between metal tape and framework 14.In order to control metal tape stress along the longitudinal direction (being the horizontal direction along fiber web machine in mounted situation), this equipment also has device 56, in order to the thrust of the longitudinal direction effect along equipment to be applied on this one or two end-surface member between one or two end-surface member 18 and framework 14.At this, this one or two end-surface member can be made to move fully on the direction of longitudinal axis 60.This device for generation of thrust can by control element 56 or simply by spring on two ends of this equipment or only form on one end.
Fig. 4 shows the equipment 40 for the treatment of fiber web.This equipment comprises around director element 42(such as roller) the fiber web pressure zone 44 that runs.Except pressure zone ring 44, also be provided with to be formed together with pressure zone contact surface, corresponding to the equipment 10 of one embodiment of the present invention, this equipment 10 works as complementary elements in for the treatment of the equipment 40 of fiber web, thus between pressure zone 44 and complementary elements, there is a fiber web processing region.This fiber web processing region is being formed according in the specified loading area 12 of present device.Preferably, the length of this processing region is consistent with the specified loading area of equipment according to the present invention, as shown in Figure 4.The angle that this specified loading area 12 has be in be less than 180 degree scope in, such as 30-150 degree, preferred 60-120 degree.
This also show framework 14 how embodiment as shown in Figure 1 there is supporting member 14 like that be formed as convex ".But here, the cross section of framework has significantly different from embodiment as shown in Figure 1." be constructed to a part for framework 14, except different from least one convex surface, namely supporting member region, this supporting member can be the body having corner angle in cross section, be preferably hollow to supporting member 14.
In embodiment as shown in Figure 4, in processing region, charger 46 is set in the inside of pressure zone ring, such as counter roller.Except Characteristic and function of the present invention, this charger can such as conform to the description in patent document WO03064761.Counter roller has driver 48, because as has been mentioned, the metal tape 16 according to equipment of the present invention is moved by this counter roller.And, as shown in Figure 4 according in the embodiment for the equipment 10 to pending fiber web transferring heat of the present invention, this counter roller also has charger 50, such as load shoe, and it forms on the position of nip at metal tape and charger 46 and " is connected with supporting member 14.This load shoe is for receiving the line pressure of the nip utilizing counter roller to be formed and it being reliably delivered to framework 14.Charger 50 or be made up of a unified shoe shape part, or be made up of the shoe of a hydrodynamic pressure or hydrostatic lubrication, or be made up of multiple independent shoe, these shoes are connected to each other, thus substantially can not form the region do not loaded on the direction of longitudinal axis 60.In this embodiment, charger 50 is made up of this form, and it allows the local directed complete set of longitudinal direction realization to load along this equipment.Preferably, the charger 46 of counter roller is made up of rigid roller, and it can not provide the local directed complete set to load.Pressure zone 44 is preferably made up of thin steel band.
Fig. 5 shows the embodiment that is similar to Fig. 4, and its difference is: its counter roller has adjustable load shoe 52.Like this, for having charger 50 ' to the equipment 10 of pending fiber web transferring heat, it is formed on the position of nip at metal tape and charger 46 and " is connected with supporting member 14.This load shoe also for receiving the line pressure of the nip utilizing counter roller to be formed, and is reliably delivered to framework 14 at this.Charger 50 ' or be made up of a unified shoe, or be made up of the fixing shoe of a hydrodynamic pressure or hydrostatic lubrication, but itself and framework 14 also can be made to combine, at this, framework 14 has larger wall thickness along the longitudinal direction in this position, and has the lubricating chamber of interpolation there when hydrostatic lubrication.Provide the charger that type is applicable in the implementation shown in fig. 5, it does not allow to carry out local directed complete set along the longitudinal direction of equipment to loading, and that is, it is so-called fixing charger 50 '.Preferably, metal tape 16 is made up of thin steel band.
But merely illustrate more favourable embodiment more of the present invention before it is pointed out that.Therefore it should be understood that the present invention is not limited to above-mentioned embodiment, but can be applied in every way under the framework constructed by claims.The each feature described explicitly from different embodiment also can use in combination with other embodiment under the framework of basic conception of the present invention, and/or when expecting and under technology prerequisite set thus, described Feature Combination is become various integral unit.
Claims (18)
1. for an equipment for transferring heat in fiber web machine, have: microscler framework (14), this equipment can be supported on the desired locations in this fiber web machine by this framework, with be set to can around the jointless metal tape (16) of this frame member, this framework has supporting member (14 ") of convex, can load described metal tape from the outside relative to this supporting member, it is characterized in that, described metal tape is made up of the metal tape with being set to cylindrical shape around described framework, and on two end faces of described metal tape (16), be provided with end-surface member (18) explicitly with described metal tape (16), described end-surface member passes through its periphery on the edge of described metal tape, and two of described framework ends extend through described end-surface member, and this equipment also has heat-conducting medium feeding mechanism and heat-conducting medium discharger, for heat-conducting medium being transported to the medial surface of this metal tape and heat-conducting medium being derived from this equipment.
2. equipment as claimed in claim 1, it is characterized in that, described supporting member has importing edge and derives edge in the rotation direction of predetermined described metal tape, and have substantially the same bearing-surface between this importing edge with this derivation edge, the center of rotation of described bearing-surface and predetermined metal tape forms the angle superimposed with the specified loading area of this equipment.
3. equipment as claimed in claim 1 or 2, is characterized in that, described heat-conducting medium feeding mechanism has at least one and is arranged on distributor (26) between described framework and described metal tape, and this distributor has multiple outlet (28).
4. equipment as claimed in claim 3, it is characterized in that, the outlet (28) of described distributor is configured to, and is ejected into by heat-conducting medium on the medial surface of described metal tape (16).
5. equipment as claimed in claim 3, it is characterized in that, the outlet of described distributor is configured to, on medial surface heat-conducting medium being ejected into described metal tape and the importing edge of contiguous described supporting member.
6. equipment as claimed in claim 1 or 2, it is characterized in that, described heat-conducting medium discharger has scraper (30), for striking off heat-conducting medium from the inner surface of described metal tape.
7. equipment as claimed in claim 6, it is characterized in that, described scraper is arranged on the derivation adjacent edges of described supporting member.
8. equipment as claimed in claim 6, it is characterized in that, described scraper has the doctor blade holder stretched out from described framework and the doctor edge be fixed on this doctor blade holder, one or more drain sleeve is provided with near described doctor edge, for removing the heat-conducting medium be collected, and the heat-conducting medium be collected is directed in discharge tube.
9. equipment as claimed in claim 1, it is characterized in that, described end-surface member is rounded, and described framework extends through described end-surface member as follows: in the executing location of described end-surface member, and the axis of described framework and the center of described end-surface member coincide.
10. equipment as claimed in claim 1, it is characterized in that, (14 ") have at least one charger that can adjust in a longitudinal direction (50) to the supporting member of described equipment (10).
11. equipment as claimed in claim 10, it is characterized in that, described charger (50) is load shoe.
12. 1 kinds of surface processing devices for the treatment of fiber web, there is the complementary elements that the pressure zone being set to rotate around director element (42) and the outside being arranged on pressure zone ring form contact surface together with this pressure zone, fiber web processing region is formed between described pressure zone and complementary elements, pending fiber web is conducted through this region, it is characterized in that, described complementary elements by for pending fiber web transferring heat, equipment (10) according to any one of claim 1 to 11 forms.
13. surface processing devices as claimed in claim 12, is characterized in that, be provided with charger (46) in the processing region on the medial surface of described pressure zone.
14. surface processing devices as claimed in claim 13, is characterized in that, the charger (46) be arranged in the processing region on the medial surface of described pressure zone is counter roller.
15. surface processing devices as claimed in claim 14, it is characterized in that, described counter roller is equipped with driver (48).
16. surface processing devices as claimed in claim 14, is characterized in that, described counter roller (46) has the charger (52) that can adjust on the longitudinal direction of roller.
17. surface processing devices as claimed in claim 16, is characterized in that, the charger (52) that described counter roller (46) has is load shoe.
18. 1 kinds of fiber web machine drying sections, for being separated moisture by evaporation from fiber web, it is characterized in that, this drying section has at least one for heat being delivered in pending fiber web, according to any one of claim 1 to 11 equipment.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI20126033A FI20126033L (en) | 2012-10-03 | 2012-10-03 | Device for heat transfer in a fiber web machine, surface processing device for processing the surface of fiber web and drying part in a fiber web machine |
| FI20126033 | 2012-10-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103711021A CN103711021A (en) | 2014-04-09 |
| CN103711021B true CN103711021B (en) | 2016-02-24 |
Family
ID=50276530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310444822.4A Expired - Fee Related CN103711021B (en) | 2012-10-03 | 2013-09-26 | The equipment of transferring heat, surface processing device and drying section in fiber web machine |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN103711021B (en) |
| AT (1) | AT513424B1 (en) |
| DE (1) | DE102013219730A1 (en) |
| FI (1) | FI20126033L (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4464226A (en) * | 1981-05-20 | 1984-08-07 | Valmet Oy | Paper machine press with a wide pressing zone |
| US4955268A (en) * | 1987-06-15 | 1990-09-11 | Sulzer-Escher Wyss Gmbh | Apparatus containing a work surface heated with a heat carrier medium |
| CN1120099A (en) * | 1994-06-23 | 1996-04-10 | 维美德纸张机械公司 | Method and device in drying or cooling of a paper web or equivalent |
| CN1204761A (en) * | 1997-07-07 | 1999-01-13 | 三菱重工业株式会社 | Continuous drying apparatus for porous web |
| DE102004017824A1 (en) * | 2004-04-13 | 2005-11-03 | Voith Paper Patent Gmbh | Assembly to give a continuous web drying action, at a paper or tissue or cardboard production or finishing machine, has two heated cylinders for the web to pass around them together with blankets and impermeable belts |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4889048A (en) * | 1988-04-13 | 1989-12-26 | Miller Ray R | High heat flux roll and press utilizing same |
| NO315392B1 (en) * | 2002-01-11 | 2003-08-25 | Kvaerner Eureka As | Method of heating a mantle work surface on a rotating roller and rotatable roller for heating a web material |
| US7704351B2 (en) * | 2002-01-29 | 2010-04-27 | Metso Paper, Inc. | Processing device and method of operating the device for processing a coated or uncoated fibrous web |
| DE102008041775A1 (en) * | 2008-09-03 | 2010-03-04 | Voith Patent Gmbh | Pressing roller for handling paper, cardboard, tissue or fibrous material sheet in machine for producing or refining fibrous material sheet, has roller casing that is mounted at both ends of side window of roller axle |
-
2012
- 2012-10-03 FI FI20126033A patent/FI20126033L/en not_active Application Discontinuation
-
2013
- 2013-09-26 CN CN201310444822.4A patent/CN103711021B/en not_active Expired - Fee Related
- 2013-09-30 DE DE201310219730 patent/DE102013219730A1/en not_active Withdrawn
- 2013-10-03 AT ATA765/2013A patent/AT513424B1/en not_active IP Right Cessation
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4464226A (en) * | 1981-05-20 | 1984-08-07 | Valmet Oy | Paper machine press with a wide pressing zone |
| US4955268A (en) * | 1987-06-15 | 1990-09-11 | Sulzer-Escher Wyss Gmbh | Apparatus containing a work surface heated with a heat carrier medium |
| CN1120099A (en) * | 1994-06-23 | 1996-04-10 | 维美德纸张机械公司 | Method and device in drying or cooling of a paper web or equivalent |
| CN1204761A (en) * | 1997-07-07 | 1999-01-13 | 三菱重工业株式会社 | Continuous drying apparatus for porous web |
| DE102004017824A1 (en) * | 2004-04-13 | 2005-11-03 | Voith Paper Patent Gmbh | Assembly to give a continuous web drying action, at a paper or tissue or cardboard production or finishing machine, has two heated cylinders for the web to pass around them together with blankets and impermeable belts |
Also Published As
| Publication number | Publication date |
|---|---|
| AT513424B1 (en) | 2015-04-15 |
| DE102013219730A1 (en) | 2014-04-03 |
| AT513424A2 (en) | 2014-04-15 |
| AT513424A3 (en) | 2014-07-15 |
| CN103711021A (en) | 2014-04-09 |
| FI20126033L (en) | 2014-04-04 |
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